Zhangsun Wuji

Zhangsun Wuji (died 659) was Chancellor of Tang China from 627 to 628, from 645 to 649, and from 649 to 659.

Biography
Zhangsun Wuji was born to a Xianbei family, and he was the son of Sui general Zhangsun Sheng. His sister married Emperor Taizong of Tang, and the brothers-in-law became close friends, with Zhangsun Wuji serving on Taizong's staff. He helped Taizong overcome his brothers Li Jiancheng and Li Yuanji in 626 AD and served as a Chancellor of Tang China from 627 to 628, from 645 to 649, and from 649 to 659. Zhangsun Wuji took part in Taizong's campaign against Goguryeo in 645, taking part in the victory at the Battle of Mt. Jupil and the defeat at the Siege of Ansi. Under his nephew Emperor Gaozong of Tang, Zhangsun Wuji remained his Chancellor, but he opposed the Emperor's incestuous change of wives (taking his father's concubine as his wife), and he was then exiled and forced to commit suicide in 659.